FRS FA20 turbo vs FRS lsx/2jz

[hmong337]

Originally Posted by AZFA20

Mine should be up and running by early next month. Would be this month but I have too many other projects going simultaneously that need to get finished first. Anyway I'll be able to give a pretty good impression review since my personal FR-S was supercharged, then Turbocharged, and now a modded LS2 swap is in process. Previous setup was 430whp on e85. Next will be 525whp NA goodness on 91oct with a whole lot less stress on the engine.

The cost argument is really negligible especially when you consider how much more reliable the LSx is in long run.

Thanks! I will be looking forward to your impressions of the swap.

500+hp, 91 octane and reliability to boot. 4 bangers can only dream...

[AZFA20]

Originally Posted by Poodles

Keep in mind even LS motors have weaknesses (piston slap for starters). HP/liter isn't a definitive measure of "stress" on an engine either. Engine layout plays in a hell of a lot.


Perfect example is 2JZ vs LSx. 7 mains vs 5, piston oil squirters, inherently perfect balance, etc


Also, don't get me started on the full variable valve timing and dual injection system of the FA20 being lightyears ahead of most LS motors.


Still say if your goal is only 500HP, the LS is a waste of money (hell, Full Blown did over that on a stock FA20 and a build FA20 should take that all day)

To each is own I suppose but all I do is work on these FA20s and personally it's a love hate for me. Love em because they constantly break and I make money, hate em because they constantly break.

What you say makes the FA20 lightyears better is also its achillies heel. It's a neat engine but I think once you spend a lot of time with highly modified FA20s your opinion of them changes.

500hp can be ran all day everyday with an LSx or 2JZ, with an FA20....... not so much. Even built their life expectancy is much shorter. Both the LSx and 2JZ have gobs of room to grow and honestly when I was at 430whp with the FA20, traction was already an issue even at 70+mph. I went this direction for reliability and big NA power. Should I choose down the road I can implement forced induction. This makes the car essentially useless on the track or road but it looks sweet and performs well on the dyno haha.

Either way everyone will go their own way, that's what makes this fun. Me personally, the FA20 is just not the best platform for my preference anymore. Regardless it will have a place in my heart but so do most all engines at some level or another.

[autobot84]

In the FA20's defense,

Just wanted to add that for a 2.0L classed engine, I'm happy that I have an FA20 for $25k new. It gets great gas mileage. Seriously, it's good for what it is hahah.

For a simple 2.0L class, the FA20 has great engine architecture. It'll get the job done. I've always been a 4 cylinder lover. Economy yet powerful. Just needs low compression + boost build. This car was only a $25k Subaru / Toyota venture. Glad it even came out!

But for all out crazies, you'll need some sort of I6, V6, or V8. Preferably with forced induction ahah.



Everybody knows that if you wanna go fast, a 4 cylinder won't cut it! Rest assured, if this FA20 ever fails for whatever reason, this car makes a good candidate for a 600 "reliable" horsepowers and V8. I'm going to find me another engine surely. A 2gr twin turbo setup sounds gravy but an LSx is simpler. 600hp should be enough for this little car. I can't see anybody wanting more unless you're building some drag car.

But getting back to the 4 cylinders, I like my FA20 for what it is.

[kevman_101]

Unless you plan to stuff 350+ wide rear semi-slick tires, talking about 800 hp LSX or 2JZ is just plain dumb. I would not thrust an FA20 with 400+hp. I would rather have a mild supercharged FA20 in the 250-300hp range.

For a swap, I would have to research, but i would have to check which LS engine is the smallest in overall size. I would drop an LS3 or a 5.7L LS1 from a C5 Corvette if it ended up smaller and lighter. Either one has more then enough power in stock form and they have great after market products.

[PhoKingCool]

Here is my 2 cents.

Boosted FA20 - Whether it is supercharged or turbocharged, you will have reliability issues down the road. You will have upkeep maintenance which will be periodic, nevertheless costly.

As far as a LSX or 2JZ swap, this will easily cost $15k if not $20k. Why not sell your car and purchase a different one with more power straight from the factory such as a Corvette, Camaro, or Mustang? Personally I am not an advocate of extensive modifications (either of your choices).

[tahdizzle]

lSX > 2jz. Just because the LS looks better in the engine bay.

[Poodles]

Originally Posted by tahdizzle

lSX > 2jz. Just because the LS looks better in the engine bay.

Cause of the engine covers

[inertia]

Originally Posted by Poodles

Cause of the engine covers

With lsx swaps don't be a poser. Get black engine covers not ones that say "Corvette" on them.

I rather see a big ass turbo and 2jz in the engine bay. Plus you can have a large and intimidating intercooler peeping through your front bumper!

Without a doubt

2jz > lsx

Don't fight the temptation!!! lol

[ame="http://www.youtube.com/watch?feature=player_embedded&v=8T9io5gpp20"]World Fastest Toyota GT 86-2JZ Runs 9.1 @ 256 KM/H Built By EKanooRacing - YouTube[/ame]


[ame="http://www.youtube.com/watch?feature=player_embedded&v=NwVVyvNLPmg"]Ryan Tuerck's New 2013 Formula Drift FRS Portland Build: Tuerck'd Bonus - YouTube[/ame]


[ame="http://www.youtube.com/watch?feature=player_embedded&v=PgSAfmiE5JU"]Toyota GT86 with a 2jz swap on low boost - YouTube[/ame]

[solus]

The first question you should ask... Why do you need 500 hp? Because without upgradig damn near the whole car then then the power is worthless other then to brag to the Internet that you have 500 hp. Also, after all that upgrading why not just buy a corvette?

If it's just for the challenge of hitting 500 hp yourself then have fun.

[Reaper]

True. I have traction problems at 400wtq. Let alone 500+

[PhoKingCool]

Originally Posted by solus

The first question you should ask... Why do you need 500 hp? Because without upgradig damn near the while then at power is worthless other then to brag to the Internet that you have 500 hp. Also, after all that upgrading why not just buy a corvette?

Exactly! Keep in mind guys, 95% of the people that say they're going with a LSX, 2JZ, or whatever swap, end up dropping their projects because it goes over their heads. Kind of like those two guys working on their 1-2 year long "2JZ Project". @slicktop @Drift&Drag Is it really worth it to dump that much money and time into this chassis?? Not only that, but what about utilizing the power behind the build. Both engines are over built for what this car can handle. SMFH What a waste!! lol

[Jawnathin]

LSx > 2JZ

Naturally aspirated high displacement engines FTW

[Decay107]

Buy Literbike ===> go faster than ANY swapped/modded FR-S

and for pennies on the dollar too...

[Reaper]

^not true.